I had a problem about my system, someone set BIOS password and changed my computer's default boot order. I am using notebook and I have two operating system which are Ubuntu 16.04 and Windows 10 -UEFI-. GRUB boot loader is being used in the system. Someone (!) changed boot-loader grub to windows 10 so I could not open my Linux OS. First, That time was very hard for me, I'd like to reach my files which located in Ubuntu but you know windows cannot see Linux files and extensions. Anyway I found a way to reach ubuntu but this one not easiest one.Today, I investigated methods to bypass or decrypt password to reach BIOS.First of all the easiest method is remove BIOS cell. This one is easiest but useless for notebooks and new generation motherboards. Because notebooks have EEPROM that means take the data without require the voltage. As we know, RAM types require electricity to keep datas, but EEPROM not.Other method is "find backdoor in your BIOS"I found a website about BIOS keys databese. First you have to set 3 times wrong password and take note the "system disabled" number. It can be changed but when you wrote 3 times wrong password, you have to see system disabled number or etc. This can be : 50577604 or etc. must included numbers.And then enter the website and enter your number:

https://bios-pw.org/

Hopefully you will be found your manufacturer name and BIOS password bypass number. I solved my problem via that website and I am writing here with my Linux OS. :) :)